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- H. @MERRILL MACHINE FOB. MKING GROGK RIMS. No. 310,706. Patented Jan. 13, 1885.

iran Sramas araiv'r trice,

HENRY E. MERRILL, OF AKRON, OHIO, ASSIGNOR TO E. H. MERRILL t CO., OF SAME PLAGE.

MACHINE FOR MAKING CROCKBRHWS.

SPECIFICATION forming part of Letters Patent No.310,'706, dated January 13, 1885.

Application filed November 12, 18S-i. (No model.)

To all whom t may concern.-

Be it known that I, HENRY E. MERRILL, a citizen of the United States, residing at the city of Akron, in the county of Summit and State of Ohio, have invented a new and useful Improvement in Machines for Making Oroekdtims, of which the following is a specieation.

My invention has relation to improvements in mechanical devices for forming a rim or fillet on the upper edge of earthenware vessels while in a plastic state, and particularly th ose which are formed by bein g forced th rough an annular orifice.

The object of my invention is to render the crock accurately round, to trim the edge at a -right angle with the axis, and to form a rim thereon of uniform size and shape throughout.

My invention consists in the devices illus trated in the accompanying drawing, which represents the vertical central section of a crock, inside of and applied to which is my machine shown in elevation.

The operating mechanism is connected with and supported by a vertical shaft, B, which stands in the axis of the crock A by being attached at the bottom with the center of a disk, C, and at a higher point with the broad-faeed pulley, D, which can be moved up and down and held at any point by the set-screw d. The disk and pulley are of the same diameter and iit the interior of the crock. An arm, E, swings upon the shaft, and has at its outer end a knife, c, which can be forced out or drawn in by a button, b, which slides in a slot in the end of the arm. Above this arm is a frame, F, arranged to revolve on the shaft B, from which it can be removed at will. From the outer lower corner of the frame pro- 40 jects an axle, g, on which a wheel, G, is

mounted. An arm, H, slides in guide-holes in the frame, and is held inward by a coiled spring, h. The outer end of this arm bends down at a right angle,` and has a hole in it, through which the axle g passes, which arrangement prevents the arm from swinging and presses the wheel G against the frame. This arm terminates in an axle, t', on which the wheel I is mounted. The wheel G has its outer face grooved to form the upper half of the crock-rim, and the wheel I is shaped to fthe crock-body.

form the lower part of the rim, beneath which is a broad face, which runs in contact with rlhese wheels run in unison, held in position relatively to each other by bearing-surfaces. On the inside of the wheel G is a narrow face, c, which runs on the pulley D and acts as a gage for the top of the rim. In operation the pulley D is fastened on the shaft at the desired height, and the shaft, disk, and pulley placed in a crock which is in a plastic state, as shown in the drawing. This removesany imperfection in the shape of the crock, rendering the crock round, and causing it to stand perpendicular with the base. The arm E is then placed on the shaft, the knife c forced out and swung around by the button b, and the top of the crock accurately trimmed. The frame F is then placed on the shaft and revolved by a handle, f, which causes the wheel Gr to upset the edge and fill the grooves in the wheels G and I until the face c runs on the pulley D. The pulley D and the broad face on the wheel I prevent the crock-body being upset or bent below the line of the proposed rim. llhe arm is then drawn outward, as indicated by dotted lines, vto permit the wheel I to pass the rim, the frame F lifted off, and the rest of the machine withdrawn from the crock.

Theadvantage of this machine is that all creeks can be made accurately alike.

It is obvious that the width of the pulley D may be varied, and may, if it is not desired to have it adjustable, be extended into a drum reaching the bottom of the crock.

I claimm l. In a machine for forming rims upon earthenware vessels while they are in a plastic state, the combination, with a shaft arranged to stand and be supported in the axis of the vessel, of a radial arm or frame journaled upon and arranged to revolve about said shaft, and two rim-forming wheels mounted upon axles connected with said arm or frame at an angle with each other, substantially as and for the purpose hereinbefore set forth.

2. The combination of the shaft B, disk O, and adjustable pulley D, all constructed and arranged as shown, and for the purpose specified.

3. In combination with the shaft B, disk C,

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and adjustable pulley I), the arm E and knife e, all Constructed and arranged substantially as shown, and for the purpose specified.

4:. In combination with the frame I? and 5 Wheel G, the' arm II, spring,` h, and Wheel I, all constructed and arranged substantially as shown. and for the purpose specified.

5. The herein-described machine, Consisting,` of the shaft B, disk C, adjustable pulley D, Io arm E, bearing,` the knife e, frame F, wheel G, arm II, spring h, and wheel I, all conf strneted and arranged substantially as shown, and for the purpose speeified.

In testimony that I Claim the foregoing I liave hereunto set my hand this 25th day of 15 October, A. D. 1884.

HENRY E. MERRILL.

Tvvfitnesses:

C. I?. IIUMPHREY, E. W. STUART. 

